ia64/linux-2.6.18-xen.hg

view include/asm-arm/setup.h @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 /*
2 * linux/include/asm/setup.h
3 *
4 * Copyright (C) 1997-1999 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Structure passed to kernel to tell it about the
11 * hardware it's running on. See Documentation/arm/Setup
12 * for more info.
13 */
14 #ifndef __ASMARM_SETUP_H
15 #define __ASMARM_SETUP_H
17 #define COMMAND_LINE_SIZE 1024
19 /* The list ends with an ATAG_NONE node. */
20 #define ATAG_NONE 0x00000000
22 struct tag_header {
23 u32 size;
24 u32 tag;
25 };
27 /* The list must start with an ATAG_CORE node */
28 #define ATAG_CORE 0x54410001
30 struct tag_core {
31 u32 flags; /* bit 0 = read-only */
32 u32 pagesize;
33 u32 rootdev;
34 };
36 /* it is allowed to have multiple ATAG_MEM nodes */
37 #define ATAG_MEM 0x54410002
39 struct tag_mem32 {
40 u32 size;
41 u32 start; /* physical start address */
42 };
44 /* VGA text type displays */
45 #define ATAG_VIDEOTEXT 0x54410003
47 struct tag_videotext {
48 u8 x;
49 u8 y;
50 u16 video_page;
51 u8 video_mode;
52 u8 video_cols;
53 u16 video_ega_bx;
54 u8 video_lines;
55 u8 video_isvga;
56 u16 video_points;
57 };
59 /* describes how the ramdisk will be used in kernel */
60 #define ATAG_RAMDISK 0x54410004
62 struct tag_ramdisk {
63 u32 flags; /* bit 0 = load, bit 1 = prompt */
64 u32 size; /* decompressed ramdisk size in _kilo_ bytes */
65 u32 start; /* starting block of floppy-based RAM disk image */
66 };
68 /* describes where the compressed ramdisk image lives (virtual address) */
69 /*
70 * this one accidentally used virtual addresses - as such,
71 * it's deprecated.
72 */
73 #define ATAG_INITRD 0x54410005
75 /* describes where the compressed ramdisk image lives (physical address) */
76 #define ATAG_INITRD2 0x54420005
78 struct tag_initrd {
79 u32 start; /* physical start address */
80 u32 size; /* size of compressed ramdisk image in bytes */
81 };
83 /* board serial number. "64 bits should be enough for everybody" */
84 #define ATAG_SERIAL 0x54410006
86 struct tag_serialnr {
87 u32 low;
88 u32 high;
89 };
91 /* board revision */
92 #define ATAG_REVISION 0x54410007
94 struct tag_revision {
95 u32 rev;
96 };
98 /* initial values for vesafb-type framebuffers. see struct screen_info
99 * in include/linux/tty.h
100 */
101 #define ATAG_VIDEOLFB 0x54410008
103 struct tag_videolfb {
104 u16 lfb_width;
105 u16 lfb_height;
106 u16 lfb_depth;
107 u16 lfb_linelength;
108 u32 lfb_base;
109 u32 lfb_size;
110 u8 red_size;
111 u8 red_pos;
112 u8 green_size;
113 u8 green_pos;
114 u8 blue_size;
115 u8 blue_pos;
116 u8 rsvd_size;
117 u8 rsvd_pos;
118 };
120 /* command line: \0 terminated string */
121 #define ATAG_CMDLINE 0x54410009
123 struct tag_cmdline {
124 char cmdline[1]; /* this is the minimum size */
125 };
127 /* acorn RiscPC specific information */
128 #define ATAG_ACORN 0x41000101
130 struct tag_acorn {
131 u32 memc_control_reg;
132 u32 vram_pages;
133 u8 sounddefault;
134 u8 adfsdrives;
135 };
137 /* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
138 #define ATAG_MEMCLK 0x41000402
140 struct tag_memclk {
141 u32 fmemclk;
142 };
144 struct tag {
145 struct tag_header hdr;
146 union {
147 struct tag_core core;
148 struct tag_mem32 mem;
149 struct tag_videotext videotext;
150 struct tag_ramdisk ramdisk;
151 struct tag_initrd initrd;
152 struct tag_serialnr serialnr;
153 struct tag_revision revision;
154 struct tag_videolfb videolfb;
155 struct tag_cmdline cmdline;
157 /*
158 * Acorn specific
159 */
160 struct tag_acorn acorn;
162 /*
163 * DC21285 specific
164 */
165 struct tag_memclk memclk;
166 } u;
167 };
169 struct tagtable {
170 u32 tag;
171 int (*parse)(const struct tag *);
172 };
174 #define __tag __attribute_used__ __attribute__((__section__(".taglist.init")))
175 #define __tagtable(tag, fn) \
176 static struct tagtable __tagtable_##fn __tag = { tag, fn }
178 #define tag_member_present(tag,member) \
179 ((unsigned long)(&((struct tag *)0L)->member + 1) \
180 <= (tag)->hdr.size * 4)
182 #define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size))
183 #define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
185 #define for_each_tag(t,base) \
186 for (t = base; t->hdr.size; t = tag_next(t))
188 /*
189 * Memory map description
190 */
191 #ifdef CONFIG_ARCH_LH7A40X
192 # define NR_BANKS 16
193 #else
194 # define NR_BANKS 8
195 #endif
197 struct meminfo {
198 int nr_banks;
199 struct {
200 unsigned long start;
201 unsigned long size;
202 int node;
203 } bank[NR_BANKS];
204 };
206 /*
207 * Early command line parameters.
208 */
209 struct early_params {
210 const char *arg;
211 void (*fn)(char **p);
212 };
214 #define __early_param(name,fn) \
215 static struct early_params __early_##fn __attribute_used__ \
216 __attribute__((__section__(".early_param.init"))) = { name, fn }
218 #endif